Pull-socket for electric lamps.



Patented Dec. 27, 1910.

sllllllll. II

G. W. GOODRIDGE. PULL SOCKET FOR ELECTRIC LAMPS.

APPLICATION FILED JULY 30, 1908.

WITNES$ES ATTORNEYS or I? earn GILBERT 'w. GODDRIDG-E, 0F BRIDGEPCRT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELECTRIC COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CON- NECTICU'T. V

PULL-SOCKET FOR ELECTRIC LAMPS.

arenas.

Specification of Letters Patent.

Patented Dec. 27,1910.

Application filed July 30,1908. Serial No. 446,200.

To all whom it may concerns I Be it known that I, GILBERT W. Goon; RIDGE, a citizen of the United States of America, residing in the city of Bridgeport, in the county of Fairfield, in the State of Connecticuhhave invented certainnew and useful Improvements in Pull- Sockets for Electric Lamps, of which the following is a specificatio. i

The object of my invention is to produce an improved construction of pnllsocket for electricincandescent lamps, and this ObJGCi) l attain by the improvements which I will now describe. 1

In the accompanying drawin s Figure 1 is a longitudinal section of a socket embodying my improvements; Fig. 2 is a side elevation of internal parts of the socket; Fig. 3 is a sectional view on theline 33, Fig. 2.; Fig. 1 is a sectional viewon the line -l-4 Fig. 2; Fig. 5 is a perspective View of certain of the operative parts separated; Fig. 6 is a perspective View of-a detail.

The socket body comprises two buttons A and B of porcelain or other suitable insulating material united by two terminal posts C and D carrying binding screws 7 and '8 respectively for the conducting wires. .011

the porcelain B are mounted the usual lump receiving terminals E and F, and the whole may be inclosed within" any suitable case such as shell Sand cap S.

The switch mechanism is contained between the two porcelain buttons A and B, and includes an oblong contact block 12 mounted with play as usual upon'a central spindle 13 turning in suitable hearings in the buttons A and B. This block 12 revolves between the contact springs 11 and' l-l, so that in one position of the block, as shown in Fig. 4, contact will be broken but when turned a quarter turn, as shown in Fig. 5, the block 12 will make contact at its opposite ends with the springs 11, i l to close the circuit. A spring 27, (Figs. 1, 1 and 5) bears against the squared neck of the block B is in electrical connection with screw shell lamp terminal E through a securing screw in the usual manner.

.My present improvements have reference more particularly to the means for actuating the spindle and switch block 12, which it will be seen provides a double break for the circuit. There is secured to the operating spindle 13 a ratchet disk 15, (Fig. 6) ad jacent to the switch block 12 and with an insulating face on the side adjacent to said block. On the other face of the disk are radially arranged four ratchet teeth 16 (Fig. 6). In conjunction'with this ratchet disk I provide a transverse slide 18 with a pawl 19 on the-face adjacent to the ratchet disk to engage the teeth of the latter; This pawl slide 18, which may have an insulating backing, as indicated in the drawing, has an elongated slot 20 through it for the free passage of the spindle 13 which thus guides" the slide. The pawl slide is kept pressed up toward the ratchet disk by a suitable spiral spring 17, Figs. 1 and 2. The pawl slide is held back in its normal position shown in Fig. 3 with the forward end of its slot 20 pressed'ugainst the spindle 13 by a spring coiled around a post 22 fixed to the buttonscrew 24s adjustable in an arm 26 on the post 22.

To the forward end of the pawl slide 'is attached the end of a suitable operating chain G, Figs. 1, 3 and l,passing out through an opening in the outer shell. It will be seen that by pulling on this chain the pawl slide 18 will be drawn against the stress of this spring 21. 23 from the position shown in Fig. 3 to the position shown in Fig. 4c. in that straight movement of the slide 18, the pawl 19 will come into contact with one of the teeth 16 of the ratchet and give a quartcr turn to the ratchet disk lo and so to the spindle and switch block 12 to make or,

break the circuit, as the case may be.

I claim us'my invention 1. A pull socket, having'lamp receiving terminals, a switch block and spindle, in combination with 'a ratchet disk on the spindie, a transverse pawl slide to engage the by the spindle to cooperate with the ratchet, 10

ratchet teeth, a return spring for the slide substantially as described.

and two spring contacts cooperating with In testimony whereof Lhave signed my the switch block with a double break. name to this specification, in the presence 2. A pull socket having a switch block, of two subscribing Witnesses. 1

and operating spindle in combination with a GILBERT W. GOODRIDGE.

ratchet'disk secured to the spindle with an Witnesses:

insulating face adjacent to the switch block VVALTEP. ABBE,

and a transverse slotted pawl slide guided HUBERT HOWSON. 

